Concept explainers
1- An astronaut is in space and is weightless inside the space station. Does the astronaut have to exert any effort to move a box inside the space station, since the box is also weightless? Specify which of Newtowa's Laws supports your answer D
***PICK TWO ANSWERS--1st pick yes or no then pick the law that supports your answer
A) _Newton's First Law
B) _Newton's Third Law
C) _No
D) _Yes
E) _Newton's Second Law
2- You place a vase of flowers on vour table. The vase will remain on the table at rest because
A) The weight of the vase is keeping it from moving.
B) The normal force is supporting the vase.
C) The net force on the vase is zero
D) There are no forces acting on the vase
3- You have two springs. The spring constant for spring 1 is 375 while the second spring has a spring constant of 125. If you wanted to stretch both springs by 2 cm, you would need to apply a greater force to spring 1 in order to get it to also stretch 2 cm.
A) True
B) False
4- Which of the tollowing sorings would be the stiffest?
A) The springs that hold the trampoline mat to the frame
B) The springs in the Amazon delivery van.
C) Slinky that isn't broken.
D) The springs in a tirm mattress
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